Question

10 dan 11 dijawab beserta cara pengerjaan​

Answer 1

Verified answer

10

[tex]a = 2[/tex]

[tex]b = - 1[/tex]

nilai dari

[tex] = \frac{ {a}^{ - 5} {b}^{ 3} }{ {a}^{ - 1} {b}^{4} } \times \frac{ {a}^{2} {b}^{4} }{ {a}^{ - 3} {b}^{ - 1} } [/tex]

[tex] = {a}^{ - 5 + 2 - ( - 1) - ( - 3)} \: {b}^{3 + 4 - 4 - ( - 1)} [/tex]

[tex] = a {b}^{4} [/tex]

[tex] = (2)( - 1) {}^{4} [/tex]

[tex] = (2)(1)[/tex]

[tex] = 2[/tex]

A

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11

[tex] = {x}^{ - 2 \frac{1}{2} } {y}^{ - 3} [/tex]

[tex] = {x}^{ - \frac{5}{2} } {y}^{ - 3} [/tex]

[tex] = \frac{1}{ {x}^{ \frac{5}{2} } {y}^{3} }[/tex]

C